1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <complex>
10
11 // template<class T>
12 // complex<T>
13 // pow(const T& x, const complex<T>& y);
14
15 #include <complex>
16 #include <cassert>
17
18 #include "test_macros.h"
19 #include "../cases.h"
20
21 template <class T>
22 void
test(const T & a,const std::complex<T> & b,std::complex<T> x)23 test(const T& a, const std::complex<T>& b, std::complex<T> x)
24 {
25 std::complex<T> c = pow(a, b);
26 is_about(real(c), real(x));
27 assert(std::abs(imag(c)) < 1.e-6);
28 }
29
30 template <class T>
31 void
test()32 test()
33 {
34 test(T(2), std::complex<T>(2), std::complex<T>(4));
35 }
36
test_edges()37 void test_edges()
38 {
39 const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
40 for (unsigned i = 0; i < N; ++i)
41 {
42 for (unsigned j = 0; j < N; ++j)
43 {
44 std::complex<double> r = pow(real(testcases[i]), testcases[j]);
45 std::complex<double> z = exp(testcases[j] * log(std::complex<double>(real(testcases[i]))));
46 if (std::isnan(real(r)))
47 assert(std::isnan(real(z)));
48 else
49 {
50 assert(real(r) == real(z));
51 }
52 if (std::isnan(imag(r)))
53 assert(std::isnan(imag(z)));
54 else
55 {
56 assert(imag(r) == imag(z));
57 }
58 }
59 }
60 }
61
main(int,char **)62 int main(int, char**)
63 {
64 test<float>();
65 test<double>();
66 test<long double>();
67 test_edges();
68
69 return 0;
70 }
71